SAN FRANCISCO--(BUSINESS WIRE)--Presidio Pharmaceuticals, Inc., a specialty pharmaceutical company focused on developing and commercializing novel, small molecule compounds for the treatment of HIV-1 and HCV and Numerate, Inc., a biotechnology company with a proprietary drug engineering platform, announced today that they have entered into a research collaboration to discover and develop novel small molecule inhibitors of hepatitis C virus (HCV). Terms of the collaboration and the specific HCV target were not disclosed.